Time-distance study of supergranulation

Details Time-distance study of supergranulation Time-distance study of supergranulation

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.464..577b&link_type=abstract

In: Proceedings of the SOHO 10/GONG 2000 Workshop: Helio- and asteroseismology at the dawn of the millennium, 2-6 October 2000,

Computer Science

6

Supergranulation, Convection

Scientific paper

Time-distance helioseismology is a valuable tool for examining near surface flows: accurate maps of supergranulation flows are produced from the travel times of surface gravity waves. The lifetimes of individual supergranules are measured from time-distance maps and found to be inconsistent with measurements obtained from autocorrelation techniques. The spatial cross-correlation shows a East-West shift over time, suggesting that supergranulation has two components which do not co-rotate.

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